christopher stevens, who died in the attack. in washington today, state department spokeswoman victoria nuland acknowledged only two private guards are protecting the site. >> we have had some challenges securing the site. we are continuing to talk to the libyan side about that. but this was not-- based on what we've seen-- any kind of breach of classified information. >> sreenivasan: meanwhile, the f.b.i. confirmed a team of agents visited benghazi yesterday, for the first time. until now, the group had stayed away, due to security concerns. a long-standing battle over google's book-scanning project was settled today. authors and publishers filed suit against the company back in 2005, saying it violated their copyrights. google launched the project a year earlier, making digital copies of books from major research libraries. in all, more than 20 million books have been scanned. now, publishers will get to choose which books are included. a lawsuit with authors is still ongoing. facebook now has one billion users. the number-one social media site announced today that it reached the milestone in september. it said the median age o